Title :
A comparison study of low-profile power magnetics for high-frequency, high-density switching converters
Author :
Ramakrishnan, Sriram ; Steigerwald, Robert L. ; Mallick, John A.
Author_Institution :
GE Corp. Res. & Dev., Schenectady, NY, USA
Abstract :
The electrical and mechanical issues critical to the design of low-profile power magnetics are discussed. The disk and tube-type designs are evaluated over the frequency range of 0.5-10 MHz by an optimization process to maximize the efficiency for a given foot-print and height. The tube-type transformer is shown to have a higher power density at a lower height than the disk-type transformer, operating at the same efficiency at 1 MHz. The tube-type design allows the fabrication of transformers with heights as low as 50 mils
Keywords :
DC-DC power convertors; high-frequency transformers; switching circuits; 0.5 to 10 MHz; DC/DC power convertors; disk-type designs; efficiency maximisation; electrical issues; high power density; high-density switching converters; high-frequency convertors; low-profile power magnetics; mechanical issues; optimization process; tube-type designs; Fabrication; Frequency; Geometry; Inductors; Magnetic cores; Magnetic flux; Magnetic materials; Magnetic resonance; Magnetic shielding; Magnetic switching;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3704-2
DOI :
10.1109/APEC.1997.581480
